Liquid-fuel burner.



J. MERLE.

LIQUID FUEL BURNER.

APPLICATION FILI-:D MAY 25, Isn.

Patented July 9, 1918..

IIIIIIIII II ATTORNEY J. MERLE.

LIQUID FUEL BURNER.

APPLICATION FILED Mln/25.1911.

Patented July 9, 1918.

2 SHEETS-SHEET 2- TTRNE Y .rosnrn 1mm, or naNsomiUasr, NEW vom;

p :nimma-FUEL summa.

A. To all 'whom it may concern:

new and useful Improvements in Liquid-V v Fuel Burners, of which the following is a full, clear, and exact description, such as will enable' other skilled in the art-towhich y v vIn` theaccompanying drawin it appertains to make and use thesame.

vThis invention relates to liquid fuel burn# ers, and-with regard to its more specific features, a liquid fuel burner having means for vaporizing the fuel and for consuming the fuel in the form of a vapor.

An objectof this invention is to provide a device of-the character'described 1n which the combustion orifice will be maintained kfree from obstruction so as to insure a clean iame. v.

, Another `object of this invention is to improvethe vaporization of the fuel by preventing 'the accumulation of products of combustion in the vaporizing chamber.

Another object of the invention is to provide a device of the character described in which the height of the iame may be controlled by throttling the vaporpassages. Other objects will be in part'obvious and in part pointed out hereinafter.

vThe invention accordingly consists in the vfeatures of construction, combinations of elements and arrangement of parts which willbe exempliied in the construction hereinafter set forth, and the sco e of the application of which -will be inricated in the following claims.

forming part of the specification in which similar reference; characters refer to sinn'lar parts throughout the' several views,

,Figure 1 shows `an elevation of a burner made in accordance with this invention, certain of the parts being in sections mor clearly to illustrate the invention.

Fig. 2 is a sectional view along the line II-Iref Fig. 1.

Fig. s is a- View similar to Fig. 1 f a modified form showing the parts in relation to close the valves.

- l Specification of Letters latent.

Kings and Patented July el, 191e.

'Y 'ppuqauonmea Mayas, i917. serial No. 110,804.

Fig. 4 shows the modification illustrated in'Flg. 3 in a section taken`at the valves showing the valves open.

Fig. 5 is a view similar to Fig. 3. of a modification. 4

Fig. 6 is a view similar to Fig. 2 of another modication.

The numeral 1 indicates a rod adapted as at 2 to be connected to a suitable container 3 for a liquid fuel.

A block 4 is mounted for longitudinal movement on this rod 1 which may conveniently be done by providing screw thread 5 upon the rod adapted to mate with corresponding threads upon the block. Mountb ook 4 in position to surround the outer end of the rod 1 is a vaporizing chamber 6 provided at its outer end With a combustion orifice 7, which is preferably sit- 'uated so as to be coaxial with the screw thread 5 and with the rod 1. 0n the interior of the va orizing chamber 6 between the walls of t at chamber and the rod 1, there is provided some means for increasing the heating area of the vaporizing chamber. As illustrated in-Fi 1 this comprises a' cylindrical sheet of w1re cloth 8.

In order to control the flame means are provided whereby a relative movement be-` tween the vaporizing chamber 6 and the rod will cut o communication between ,the vaporizing chamber 6 andthe combustion orilice. As illustrated, the upper portion as 9 of the rod has a conical end as 'shown at 10, and the combustion chamber is provided with a complementary seat 10 adapted to coperate with end 10 to" form a valve 11.

For the purpose of maintaining the combustion orifice free from obstruction, there may be provided upon Vthe outer end of the rod 1 coaxial with the combustion` orifice 7 a cleaning pin 12, so arranged that when the valve 11 is closed, the pm 12 will project through the combustion orifice' and thrust out any dirt or combustion pr'oducts that may-be lodged therein. When the valve 11 has been opened to permit the passage of vapor from the vaporlzin chamber through the combustion orifice, t e pin 12 Will be 'withdrawn from the orifice.

regulate the-flame, a handle 15 may be provided, connected-to the-block 4; and lfor the .purpose of facilitating the starting of the burner by" initially heating the vapori'zng vapor, there may be provided an annular an 16 surroundin the base of the Vaporizingchamber in which a suitable fuel may be placedfthe lburning of which will heat the va oriz'ing chamber.

or the purpose of 'conductingtherfuel' from the interior of the container 3 to the interior of the vaporizing chamber 6,' a suitable conduit 18 is provided which may conveniently comprise an opening through the rod 1 from the bottom upwardly to a point opposite the vaporizing chaJmber, which may open laterally into the vaporizing chamber as shown at 19.. A

In Figs. 3,4 and 5 are illustrated modifications in which means are provided for closing communication between the fuel supply and the vaporizing chamber as well as the vaporizing chamber and the combustion orifice.

The valve construction of Figs. 3 and 4 is as follows: The parts 1 and 9 are made separate, the part 1 is provided at its upper end with a Valve seat 20 with which the lower end of the rod 9 is adapted to cooperate to form a valve 21. In order to retain the valve 21 normally open, a spring 22 may be provided bearing at one end against the rod 1, .and at the other end against a shoulder 23 upon the rod 9,

In the modification. shown in Figs. 3 and' 4 the vaporizing element is of a different type from that/shown in Fig. 1, and comprises a hollow cylinder 8, the outer sur face area of which may be increased as by having a helical groove cut therein. This cylindrical member 8 will be provided with a central bore for the rod 9*? which at some point will be increased in diameter to provide a shoulder 24 adapted to coperate with a shoulder 25 .upon the rod 9 to limit the movement of the rod 9 responsive to the In ig. 5 is illustrated a modicationinvolving the same valve construction as in Figs. 3 and 4 used with the vaporizing element as illustrated in Fig. 1. In this modification, for the purpose of guiding the rod a third forrn of vapori'zn element is Villustrated comprisinga cyli'n er of metal with its -outer surface polygonal in lcross section.

In each of the .Various modifications vof this invention the vaporizing element will preferably be held against rotation on-the rod 1 whereby a relative motionb'etween the vaporizing chamber and .the element will be produced by the adjustment of the flame, and the shape and size of lthe vaporizing 'element will be such that while at all times affording passage for the vapor through the vaporizing chamber, yet the relative movement between the element and the Vaporizing chamber may be utilized vto keep lthe vaporizing chamber free from deposits Aor dirt. As illustrated, 'the vaporizing ele ment 8 in the form illustrated in Figs. 1 and 5 mayl be provided with a support 28 surrounding the rod 1. In thisform the support 28 and in the form"illustrated in Figs.l 3, 4 and 6 the vaporizing element itself may be provided with a non-cylindrical portion, as, for example, a square recess 29 adapted to coperate with a non-cylindrical portion as for example, a square shoulder 30 on the rod 9, whereby the vaporizing element may move longitudinally upon the rod 1 but cannot rotate thereon. By this construction the vaporizing element moves circumferentially on ythe interior-ofthe vaporizing chamber whenever the height of a flame is adjusted, whereby the 4interior of the combustion chamber is freed4 from carbon deposits and` other impurities which may interfere with the transfer of heat from the walls of the combustion chamber to the fuel on the interior thereof, and might :ob-

struct the fuel passages.

The operation of this device is as follows: The orifice 18 having been placed in communication with the fuel supply and sufflcient pressure having been placed upon the fuel to force it out through the lateral V .orifice 19 into the vaporizing chamber 6,

the heat of the chamber 6 will cause the vaporization of the fuel, and if the communication between the va orizing. chamber and the combustion orifice? be opened, the vapor discharged through the orifice 7 maybe ignited. Should it be desired to reduce the fiame, the handle 15 may be turned to lower the combustion chamber 6 upon the rod 9 and thereby cause the conical end 10 of the A6 from the, fuel reservoir 3, and the lower flame will cause a loweringof the temperature of the combustion chamber 6, whereby -rod 9 to throttle the vapor as it passes tothe quantity of vapor generated in the vaporizing chamber will be reduced.y Should 1t be desired to shut off the supply ofl fuel by turning fthe handle 15 still more, the conical end 10 may be caused to completely close the passage of the chamber 6 to the combustion orifice and thus completely shut off the supply of fuel.

In the modification shown in Fig. 3, 'after the passage of vapor from the vaporizing .chamber 6 tp the Vcombustion orifice 7 has been closed byI movement of the handle 15, a still further` turning of the handle will causethe communication between the fuel reservoir 3 and the vaporizing chamber 6 to be completely closed by means of the cop erating elements 20 and 21, whereby if the .I packing between the block 4 andthe thread 5 should be slightly loose, the pressure m the tank 3' will not be permitted to escape, even though the packing between the block 4 and the screw 5 should be slightly loose.

rl`lhe frequent movement ofthe vaporizing element in the vaporizing chamber of the pin 12 in the combustion orifice 7 will keep the fuel passages free from dirt and f obstruction without danger of damaging` them by Iunskillful attempts toclean them out. Thus the -satisfactory operation of the burner is maintained.

rfhus by the above construction is accomplished among others, the objects hereinbefore set forth. Y

Having described my invention, what I claim as new'and desire to secure by Letters Patent is: 'Y

1. A liquid fuel burner comprising, in

combination, a vaporizing chamber prol vided with an orifice, a member relative to which said chamber is movable for conducting fuel to said chamber, said member being provided with. means for increasing the evaporation surface in the vaporizing chamber and with means operative by said relative movement to close said orifice.

2. A liquid fuel burner comprising, in combination, a vaporizing chamber .pro-

vided with an orifice, a member relative to vwhich said chamber is movable for conducting fuel to said chamber, said member being providedlwith means forincreasing the evaporation surface in the vaporizing chamber and with means operative by said rela'- tive movement to Aclose said orifice, said means for increasing the evaporation area being adapted to bear against the inner surface ofthe vaporizing chamber whereby said chamber is freed lfrom carbon Adeposit by the relative movement between said member and the vaporizingl chamber.

3. A liquid fuel burner comprising, in combination, a vaporizing chamberv provided Awith an outlet, a member relative to which said chamber is movable, for conducting fuel to saidV chamber, said member being provided with metallic edges adapted to be operated by the relative movement to v -quentlyshut off fuel from said' supply.

. 5. A liquid fuel burner com rlsing, in combination, a vaporizing cham r having aninlet for liquid fuel and outlet for vaporized fuel, a member adapted to close Aboth inlet and outlet, and means for pre-y venting the closing of the inlet until theoutlet hasbeen closed.

6.k A liquid fuel burner comprising, in combination, a vaporizing cham er having an outlet for vaporized fuel, a member adapted toconduct liquid fuel to said chamber and relative to which said chamber is movable, said member being provided with a guideway, and a rod movable in said guideway and adapted-to be caused by said to shut off the supply of liquid fuel to said chamber. f

7. A liquid fuel) burner com rising, in combination, a vaporizing cham er having an outlet for vaporized fuel, va member adapted to conduct liquid fuel to said chamber and relative to which said chamber is mova)ble, said member being provided with a guideway, a rod movable in said guideway and adapted to be caused by said relative movement to closel said outlet and to shut off the supply of liquid fuel to said chamber, and means causin said rod to close said outlet before shutting off the supply of fuel to said chamber.

8. A liquid fuel burner comprising, in combination, a member having a bore adapted to communicate with asupply of fuel under pressure, a vaporizing chamber comv municatmg with the' bore of said member, said vaporizing chamber being provided with a combustlon orifice, a part adapted to throttle the communication between the vaporizing chamber and said orifice and between said member and said vaporizing chamber, and means for holdingthe communication between said member and said vaporizing chamber open until the communication between said chamber and said orifice has been closed. y

relative movement to close said outlet and v9. A liquid fuel burner comprising, in combination, a memberhaving abore adapted to'condlct fuel from a supply of fuel under pressure, a vaporizing chamber communicating with said bore and provided -With a combustion orifice and an inlet 017if/ce, the vaporizing chamber'being movable relative to said member, a rod havmg means at one end to shut oli the supply of fuelto the vaporizing chamber, and having at the other end means to close communication'betweenthe vaporizing chamber'and the combustion orice, means normally urging said rod away from the inlet orice of said combstion chamber, whereby the inlet orifice 15 i In testimony vWhereofI alx my signatni'e,

in the presence of two witnesses.

j .y 'JOSEPH MERLE. Witnesses:

. I-I. M. SEAMANS, WILLIS B. RICE. 

